Intrauterine device--associated pelvic actinomycosis: a rare disease mimicking advanced ovarian cancer: a case report.

A case report of intrauterine device (IUD)-associated tubo-ovarian actinomycosis is presented. The patient was a 37-year-old nulliparous woman with IUD usage for the last four years. She presented anemia and weight lost of 8 kg. Ultrasound and computed tomography showed an unilateral large mass in the right adnexum adherent to the uterus and compressing the urinary bladder. Preoperative diagnosis of ovarian cancer with liver metastases was made. Bilateral salpingoophorectomy and total abdominal hysterectomy were performed. After pathological and biological analyses, actinomycosis was diagnosed and the patient was treated postoperatively with penicillin. The purpose of this article is to add to the literature a new case of this rare disease which clinically mimics ovarian cancer.